Show what happens to genetic material when it is exposed to different types of light from the sun.
Do:
Use the Light Waves Simulation to test the effects of different types of light from the sun on genetic material. Refer to the image above to see which types of light from the sun reach Earth’s surface. Turn Show Energy on.
Drag GENETIC MATERIAL to a platform in the testing area.
Set the light source to CUSTOM and turn on the light.
Use the slider to change the wavelength/type of light the laser emits. Test:
Ultraviolet (UV)
Visible (any color)
Infrared (IR)
Microwave
Radio
Record the results on your Modeling Tool: Investigating Light’s Effect on Genetic Material sheet.
If the type of light has an effect on genetic material, record it.
If the type of light has no effect on genetic material, record it.
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Question 5
5.
Which wave has a larger amplitude? How might this change in amplitude impact how you experience the wave (sound or light)?
CFS:
Accurately identifies the type of light reactions that cause changes in objects
Accurately describes the relationship between wave properties and outcomes
I think wave (1 / 2) has a larger amplitude meaning ...
Directions: Read the article and answer the questions that follow.
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Question 6
6.
Draw two waves with different amplitudes and the same wavelength:
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Question 7
7.
Based on the waves you have drawn above, what will be the same in terms of how you experience the waves above? What will be different? Explain your answer.
CFS:
Accurately identifies the differences in light sources
Accurately describes the relationship between wave properties and outcomes
I think the waves might have the same (volume/ type of pitch) because ...
Question 1
1.
Record the results on your Modeling Tool: Investigating Light’s Effect on Genetic Material sheet.
Question 2
2.
Based on the notes above and your results from the SIM, explainwhat types of light could cause skin cancer?
CFS:
Accurately identifies the type of light reactions that cause changes in objects
Accurately describes the relationship between wave properties and outcomes
I think the types of light most likely to cause skin cancer are ... because ...
Question 3
3.
Which types of light do not cause skin cancer?
Question 4
4.
If the light causes genetic material to change, what type of light interactions must have occured with the skin cells? How do you know?
CFS:
Accurately identifies the type of light reactions that cause changes in objects
Accurately describes the relationship between wave properties and outcomes
If light caused a change the light interaction that must have caused this is ... (absorbed/ reflected/ transmitted) because ...
